number 31 pleease. please show work so I may learn. thank you Base your answer t

Question

number 31 pleease.

please show work so I may learn. thank you

Base your answer to questions 30 and 31 on the diagram below and cm your knowledge of physics, The diagram represents two small, charged, identical metal spheres. A and B that are separated by a distance of 2.0 meters. What is the magnitude of the electrostatic B? (1) 7.2 times 10^-3 N (2) 3.6 times 10^-3 N If the two spheres were touched together and then separated, the charge on sphere A would be (1) -3.0 times 10^-7 C (2) -6.0 times 10^-7 C (3) -1.3 times 10^-6 C (4) -2.6 times 10 C

Explanation / Answer

Here, you have to understand the concept of Charge.

Negative Charge is on A as it has excess electrons.

Positive Charge on B shows deficiency of electrons.

As, both spheres are touched ,

- 1.0*10-6 C charge flows from A to B to neutralise +1.0*10-6 C.

Charge remaining on A = -( 1.6 - 1.0)*10-6 C = - 0.6*10-6 C

So, correct option is (2) -6.0 *10-7 C

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